Slate-frame



NITED STATES PATENT OFFICE.

EDMUND MORRIS, OF BURLINGTON, NEW JERSEY.

SLATE-FRAME.

Specification of Letters Patent No. 11,903, dated November 7, 1854.

- To all whom it may concern VBe it known that I, EDMUND MORRIS, of thecity and county of Burlington, State of New Jersey, have invented a newand Improved Mode of Making Slate-Frames, which invention consists informing the frame out of a solid piece by sawing out the center and thencutting a kerf along and through each end of the frame, through whichkerf the slate may be inserted and adjusted in a groove previously cutto receive it on the inside of the frame, said kerf being afterwardlilled up by a tongue, the grain of which shall run in a directioncontrary to the grain of the frame, said kerl answering the doublepurpose of admitting the slateyand eifectually strengthening the linnersides of the frame, said shaft' projecting through a table convenientlyarranged for the purpose7 and revolving the saw or cutter in ahorizontal plane. The frame is then passed over a saw, which cuts ineach end` a kerf E, of the same width` with the groove inside, andextending down to the dotted lines C, C. The slate is then passedthrough either of these`end kerfs, adjusted in its place, the tongues O,O, Fig. 3, glued or otherwise secured in the kerfs, and the trarnesmoothed off. The tongues, by being made to extend down through thewhole of the cross grain end of the frame, as shown by the dotted lines,efectually strengthen the frame.

Fig. D, represents a perfect slate; Fig. 3 shows the tongue, sawed outto lill up the kerf, and make a perfect fit.

What I claim is- The mode of constructing a slate frame substantially asherein described.

EDMU ND MORRIS.

In presence of- WILLIAM C. MYERS, MICHAEL SHEMELIA.

